Add Lookup generic argument in Lookup tests · QED-it/halo2@023551b

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virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`

unused import: `Scope`

unused doc comment

unused doc comment

unused doc comment

struct `PointIndex` is never constructed

`halo2_proofs` (lib) generated 5 warnings (run `cargo fix --lib -p halo2_proofs` to apply 1 suggestion)